At this point, it's becoming second nature to see Chelsea Handler's nipples all out in the open — but yay for Whitney Cummings, who posted the (above) naked picture to wish her pal HBD! Her friendship with the comedian must be THE BREAST!

In fact, the 19-year-old had the exact smolder to complement her most interesting look yet, especially since the bird-printed sheer dress (we spy fashionable granny panties!) she wore down the runway was given some edge with the lace sleeves, slick bun, and smokey makeup.